Some Experiments with a 14-Mev Betasynchrotron

Preliminary experiments are described using a 14 Mev. betasynchrotron at low dose-rates. The angular distribution of the high energy region of the γ-ray beam from an internal target is measured. A value for the absorption cœfficient of the high energy photons in lead is given. The order of the neutron flux associated with high energy γ-ray beams is suggested. The measurement of the duration of the photon pulse from the synchrotron leads to a value for the radial spread of the electron beam in the synchrotron orbit.